Patent US3141809A successfully refreshed from Google Patents.
US3141809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral fiber laminate and method of making same
Assignee: Johns Manville Fiber Glass Inc
•
Filing: 1957-06-26
•
Granted: 1964-07-21
•
Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Maio Vincent Di
- 👤 Norman T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:49
CPC Classifications
B; B29; B29C; B29C70/00; B29C43/00; B29C43/02; B29C43/20; B29C43/203; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/24628; Y10T428/24736; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A FIBROUS LAMINATE COMPRISING A FIRST RESILENT LAYER OF INDIVIDUAL GLASS FIBERS ARRANGED GENRALLY IN PARALLEL RELATION BONDED ONE TO ANOTHER BY A CURED THERMOSETTING RESIN AND HAVING VOIDS THEREBETWEEN, AND AN ADJACENT LAYER OF GREATER DENSITY AND RIGIDITY INTEGRALLY JOINED THEREWITH FORMED OF INDIVIDUAL DISCONTINUOUS GLASS FIBERS BONDED ONE TOGETHER AT THEIR INTERSECTIONS AND HAVING VOIDS THEREBETWEEN, THE DENSITY OF SAID FIRST LAYER BEING BETWEEN ABOUT ONE-HALF AND ABOUT FOUR POUNDS PER CUBIC FOOT AND THE DENSITY OF SAID SECOND LAYER BEING BETWEEN ABOUT SIX AND ABOUT SIXTEEN POUNDS PER CUBIC FOOT.
Claim 2
Dependent Claim
93 words
A FIBROUS LAMINATE COMPRISING A FIRST RESILENT LAYER OF INDIVIDUAL GLASS FIBERS ARRANGED GENRALLY IN PARALLEL RELATION BONDED ONE TO ANOTHER BY A CURED THERMOSETTING RESIN AND HAVING VOIDS THEREBETWEEN, AND AN ADJACENT LAYER OF GREATER DENSITY AND RIGIDITY INTEGRALLY JOINED THEREWITH FORMED OF INDIVIDUAL DISCONTINUOUS GLASS FIBERS BONDED ONE TOGETHER AT THEIR INTERSECTIONS AND HAVING VOIDS THEREBETWEEN, THE DENSITY OF SAID FIRST LAYER BEING BETWEEN ABOUT ONE-HALF AND ABOUT FOUR POUNDS PER CUBIC FOOT AND THE DENSITY OF SAID SECOND LAYER BEING BETWEEN ABOUT SIX AND ABOUT SIXTEEN POUNDS PER CUBIC FOOT.
Claim 3
Dependent Claim
17 words
A FIBROUS LAMINATE AS DEFINED IN CLAIM 1 WHEREIN SAID HIGHER DENSITY LAYER HAS AN EMBOSSED SURFACE.
References Cited (Backward Citations)
US2124086A
Cited
US2305516A
Cited
US2393947A
Cited
US2339431A
Cited
US2552124A
Cited
US2612462A
Cited
US2550465A
Cited
US2694025A
Cited
US2744044A
Cited
US2938737A
Cited
US2760881A
Cited
US2881110A
Cited
US2868684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |